Constitutive modeling of randomly oriented electrospun nanofibrous membranes

Wong, Dannee and Verron, Erwan and Andriyana, Andri and Ang, Bee Chin (2019) Constitutive modeling of randomly oriented electrospun nanofibrous membranes. Continuum Mechanics and Thermodynamics, 31 (1). pp. 317-329. ISSN 0935-1175, DOI

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In this paper, a simple phenomenological model describing the macroscopic mechanical response of electrospun nanofibrous structures is proposed. Motivated by the experimental observation, the model development starts from the description of membrane response at fiber scale in order to capture individual fiber response and irreversible inter-fiber interactions using hyperelastic and large strain elasto-plastic frameworks, respectively. The macroscopic response is subsequently obtained by integrating the fiber responses in all possible fiber orientations. The efficiency of the proposed model is assessed using experimental data of PVDF electrospun nanofibrous membranes. It is found that the model is qualitatively in good agreement with uniaxial monotonic and cyclic tensile loading tests. Two other deformation modes, i.e., equibiaxial extension and pure shear (planar extension), are simulated to further evaluate the model responses. Finally, the deformation-induced fiber re-orientation is investigated for different modes of deformations. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.

Item Type: Article
Funders: Ministry of Higher Education Malaysia through High Impact Research Grant HIR-MOHE D000008-16001, University of Malaya Research Grant (UMRG) RP034C-15AET and RP034E-15AET, Fundamental Research Grant Scheme (FRGS) FP048-2013B, Postgraduate Research Fund (PPP) PG113-2015A, Embassy of France in Malaysia
Uncontrolled Keywords: Constitutive modeling; Electrospinning; Large deformation; Mechanical response; Membrane; Nanofiber
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 02 Dec 2019 01:48
Last Modified: 02 Dec 2019 01:48

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